Commit c79b7ff1 authored by Jaegeuk Kim's avatar Jaegeuk Kim
Browse files

f2fs: fix wrong written_valid_blocks counting 



Previously, written_valid_blocks was got by ckpt->valid_block_count. But if
the last checkpoint has some NEW_ADDR due to power-cut, we can get wrong value.
Fix it to get the number from actual written block count from sit entries.

Signed-off-by: default avatarJaegeuk Kim <jaegeuk@kernel.org>
parent 7702bdbe

fs/f2fs/segment.c

+4 −2
Original line number Diff line number Diff line
@@ -2255,7 +2255,6 @@ void flush_sit_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc) 
static int build_sit_info(struct f2fs_sb_info *sbi)

{

	struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi);

	struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);

	struct sit_info *sit_i;

	unsigned int sit_segs, start;

	char *src_bitmap, *dst_bitmap;
@@ -2322,7 +2321,7 @@ static int build_sit_info(struct f2fs_sb_info *sbi) 


	sit_i->sit_base_addr = le32_to_cpu(raw_super->sit_blkaddr);

	sit_i->sit_blocks = sit_segs << sbi->log_blocks_per_seg;

	sit_i->written_valid_blocks = le64_to_cpu(ckpt->valid_block_count);

	sit_i->written_valid_blocks = 0;

	sit_i->sit_bitmap = dst_bitmap;

	sit_i->bitmap_size = bitmap_size;

	sit_i->dirty_sentries = 0;
@@ -2476,6 +2475,9 @@ static void init_free_segmap(struct f2fs_sb_info *sbi) 
		struct seg_entry *sentry = get_seg_entry(sbi, start);

		if (!sentry->valid_blocks)

			__set_free(sbi, start);

		else

			SIT_I(sbi)->written_valid_blocks +=

						sentry->valid_blocks;

	}



	/* set use the current segments */